—Whathasmadehimsoupsetrecently?—

问题详情：

—What has made him so upset recently?

—________alone to face a troublesome milk case.

A．Left  B．Being left

C．Having left  D．To leave

【回答】

B　考查非谓语动词的用法。下句是省略回答，补充完整为：Being left alone to face a troublesome milk case has made him so upset recently.所以下句的省略回答仅是what所指内容，充当主语，所以用动名词作主语(注意被动关系)。

知识点：非谓语动词

题型：选择题